Merge pull request #329 from cipherstash/fix/pin-to-postgres-17

fix: pin tests to Postgres 17

Author: auxesis

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   postgres: &postgres
-    image: postgres:latest
+    image: postgres:17
+    pull_policy: always
     container_name: postgres
     environment:
       PGPORT: 5432

tests/docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   postgres: &postgres
-    image: postgres:latest
+    image: postgres:17
+    pull_policy: always
     container_name: postgres
     command: -c 'config_file=/etc/postgresql/postgresql.conf'
     restart: always